# GZBtech vs Protokit

The clearest difference is in-app purchases: GZBtech at none against Protokit's 1. Protokit's advantage is update cadence (every 6 days vs every 17 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Protokit sells 1 one-off in-app purchase. GZBtech asks for nothing beyond the download.

GZBtech ships an update every 17 months, Protokit every 6 days. The most recent releases landed on September 17, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | GZBtech | Protokit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/protokit-peptide-tracker/id6781553885/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 17 months | **Every 6 days** |
| Monetization | — | Freemium |
| Size | 208 MB | 50 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [CUHOM INC.](https://appshunter.io/developer/1801912949) | [Niklas Almstedt](https://appshunter.io/developer/6781553887) |

## What reviewers say

### GZBtech

[App page](https://appshunter.io/ios/app/gzbtech/id6743202072)

**In-app purchases:** none


### Protokit

[App page](https://appshunter.io/ios/app/protokit-peptide-tracker/id6781553885)

Log and track peptide cycles, doses, and vials with a powerful, clean interface. Features include a reconstitution calculator, smart scheduling with reminders, and detailed statistics on adherence and progress. Integrates with BodyMetrics for correlating lab results with your protocol.

**Highlights:** Track peptides, blends, pre-mixed vials, and tablets, Reconstitution calculator for accurate dosing, Smart scheduling with custom reminders, Detailed statistics on adherence and progress, Injection site logging with rotation reminders, BodyMetrics integration for lab data correlation, Customizable themes and views

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pep Tracker Pro – Lifetime | $24.99 | one-time |


## Frequently asked questions

### Is GZBtech free?

GZBtech is free to download, with no in-app purchases.

### Is Protokit free?

Protokit is free to download, with in-app purchases available.

### Do GZBtech or Protokit have ads?

Neither GZBtech nor Protokit shows ads.

### Which is updated more often, GZBtech or Protokit?

GZBtech ships an update every 17 months, and Protokit every 6 days. Most recently, GZBtech was updated on September 17, 2026 and Protokit on September 19, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*